top 15 interview questions with answers for network administrators
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8/10/2019 Top 15 Interview Questions With Answers for Network Administrators
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8/10/2019 Top 15 Interview Questions With Answers for Network Administrators
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Q-9: DNS record types - describe the most important ones.
Type of Record What it does
A (Host) Classic resource record. Maps hostname to IP(ipv4)
PTR Maps IP to hostname (Reverse of A (Host)
AAAA Maps hostname to ip (ipv6)
Cname Canonical name, in plain English an alias.such as
Web Server,FTP Server, Chat Server
NS Identifies DNS name servers. Important for forwarders
MX Mail servers, particularly for other domains.MX records
Q-10: What is Domain Controller?
A domain controller (DC) or network domain controller is a Windows-based computer system that is used for storing user
account data in a central database. It is the center point of the Windows Active Directory service that authenticates users,
stores user account information and enforces security policy for a Windows domain.
A domain controller allows system administrators to grant or deny users access to system resources, such as printers,
documents, folders, network locations, etc., via a single username and password.
Q-11: What is Group Policy?
Group Policy allows you to implement specific configurations for users and computers. Group Policy settings are contained in
Group Policy objects (GPOs), which are linked to the following Active Directory service containers: sites, domains, or
organizational units (OUs).
Q-12: What are GPOs (Group Policy Objects)?
A Group Policy Object (GPO) is a collection of settings that control the working environment of user accounts and computer
accounts. GPOs define registry-based policies, security options, software installation and maintenance options, script options,
and folder redirection options.
Q-13: Where is the AD database stored?
The AD database is stored in C:\Windows\NTDS\NTDS.DIT.
Q-14: What is the SYSVOL folder?
The SYSVOL folder stores the server copy of the domain’s public files that must be shared for common access and replication
throughout a domain.
All AD databases are stored in a SYSVOL folder and it’s only created in an NTFS partition. The Active Directory Database is
stored in the %SYSTEM ROOT%NDTS folder.
Q-15: What do Forests, Trees, and Domains mean?
Forests, trees, and domains are the logical divisions in an Active Directory network.
A domain is defined as a logical group of network objects (computers, users, devices) that share the same active directory
database.
A tree is a collection of one or more domains and domain trees in a contiguous namespace linked in a transitive trust hierarchy.At the top of the structure is the forest. A forest is a collection of trees that share a common global catalog, directory schema,
logical structure, and directory configuration. The forest represents the security boundary within which users, computers,
groups, and other objects are accessible.